| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 261195 |
2020-08-11T14:02:20 Z |
brcode |
Robots (APIO13_robots) |
C++14 |
|
1500 ms |
55668 KB |
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 510;
bool blocked[MAXN][MAXN];
int dp[MAXN][MAXN][12][12];
bool cw[MAXN][MAXN];
bool anticw[MAXN][MAXN];
int n,h,w;
int dx[6] = {0,0,1,0,-1};
int dy[6] = {0,1,0,-1,0};
priority_queue<pair<int,pair<int,int>>> pq;
pair<int,int> visited[MAXN][MAXN][5];
pair<int,int> bot[20];
bool check(int i,int j){
if(i<=0||j<=0||i>w||j>h||blocked[i][j]){
return false;
}
return true;
}
pair<int,int> dfs(int i,int j,int dir){
if(visited[i][j][dir]!=make_pair(0,0)){
return visited[i][j][dir];
}
if(!anticw[i][j] && !cw[i][j]){
int nexti = i+dx[dir];
int nextj = j+dy[dir];
if(check(nexti,nextj)){
return visited[i][j][dir] = dfs(nexti,nextj,dir);
}else{
return make_pair(i,j);
}
}
if(anticw[i][j]){
int newdir = dir;
newdir--;
if(newdir == 0){
newdir = 4;
}
int nexti = i+dx[newdir];
int nextj = j+dy[newdir];
if(check(nexti,nextj)){
return visited[i][j][dir] = dfs(nexti,nextj,newdir);
}else{
return make_pair(i,j);
}
}
if(cw[i][j]){
int newdir = dir;
newdir++;
if(newdir == 5){
newdir = 1;
}
int nexti = i+dx[newdir];
int nextj = j+dy[newdir];
if(check(nexti,nextj)){
return visited[i][j][dir] = dfs(nexti,nextj,newdir);
}else{
return make_pair(i,j);
}
}
return make_pair(0,0);
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin>>n>>w>>h;
swap(w,h);
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
char x;
cin>>x;
if(x=='.'){
continue;
}
if(x=='x'){
blocked[i][j] = true;
continue;
}
if(x=='A'){
anticw[i][j] = true;
continue;
}
if(x=='C'){
cw[i][j] = true;
continue;
}
int y = x-'0';
bot[y] = make_pair(i,j);
}
}
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
for(int x=1;x<=n;x++){
for(int y=1;y<=n;y++){
dp[i][j][x][y] = 1e9;
}
}
}
}
for(int i=1;i<=n;i++){
dp[bot[i].first][bot[i].second][i][i] = 0;
// cout<<i<<" "<<bot[i].first<<" "<<bot[i].second<<endl;
}
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
if(blocked[i][j]){
continue;
}
if(visited[i][j][1]== make_pair(0,0)){
dfs(i,j,1);
}
if(visited[i][j][2]== make_pair(0,0)){
dfs(i,j,2);
}
if(visited[i][j][3]== make_pair(0,0)){
dfs(i,j,3);
}
if(visited[i][j][4]== make_pair(0,0)){
dfs(i,j,4);
}
}
}
//cout<<visited[5][5][1].first<<" "<<visited[5][5][1].second<<endl;
for(int len=0;len<=n-1;len++){
for(int x=1;x<=n;x++){
int y = x+len;
if(y>n){
break;
}
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
for(int z=x;z<y;z++){
if(i==1 && j==1 && x==1 && y==4 && z==2){
//cout<<dp[i][j][z+1][y]<<endl;
}
dp[i][j][x][y] = min(dp[i][j][x][y],dp[i][j][x][z]+dp[i][j][z+1][y]);
}
}
}
while(pq.size()){
pq.pop();
}
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
if(dp[i][j][x][y]!=1e9){
pq.push(make_pair(dp[i][j][x][y],make_pair(i,j)));
}
}
}
while(!pq.empty()){
auto hold = pq.top().second;
if(dp[hold.first][hold.second][x][y] !=pq.top().first){
pq.pop();
continue;
}
pq.pop();
for(int dir=1;dir<=4;dir++){
int nxti = visited[hold.first][hold.second][dir].first;
int nxtj = visited[hold.first][hold.second][dir].second;
if(nxti == hold.first && nxtj == hold.second){
continue;
}
if(nxti == 0 && nxtj == 0){
continue;
}
if(dp[nxti][nxtj][x][y]>dp[hold.first][hold.second][x][y]+1){
dp[nxti][nxtj][x][y] = dp[hold.first][hold.second][x][y]+1;
pq.push(make_pair(dp[nxti][nxtj][x][y],make_pair(nxti,nxtj)));
}
}
}
}
}
//cout<<visited[1][7][3].first<<" "<<visited[1][7][3].second<<endl;
// cout<<dp[1][7][3][4]<<endl;
int ans = 1e9;
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
ans = min(ans,dp[i][j][1][n]);
}
}
if(ans == 1e9){
ans = -1;
}
cout<<ans<<endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
1 ms |
512 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
1 ms |
512 KB |
Output is correct |
| 6 |
Correct |
1 ms |
384 KB |
Output is correct |
| 7 |
Correct |
0 ms |
384 KB |
Output is correct |
| 8 |
Correct |
1 ms |
384 KB |
Output is correct |
| 9 |
Correct |
1 ms |
384 KB |
Output is correct |
| 10 |
Correct |
1 ms |
512 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
1 ms |
512 KB |
Output is correct |
| 6 |
Correct |
1 ms |
384 KB |
Output is correct |
| 7 |
Correct |
0 ms |
384 KB |
Output is correct |
| 8 |
Correct |
1 ms |
384 KB |
Output is correct |
| 9 |
Correct |
1 ms |
384 KB |
Output is correct |
| 10 |
Correct |
1 ms |
512 KB |
Output is correct |
| 11 |
Execution timed out |
1588 ms |
55668 KB |
Time limit exceeded |
| 12 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
1 ms |
512 KB |
Output is correct |
| 6 |
Correct |
1 ms |
384 KB |
Output is correct |
| 7 |
Correct |
0 ms |
384 KB |
Output is correct |
| 8 |
Correct |
1 ms |
384 KB |
Output is correct |
| 9 |
Correct |
1 ms |
384 KB |
Output is correct |
| 10 |
Correct |
1 ms |
512 KB |
Output is correct |
| 11 |
Execution timed out |
1588 ms |
55668 KB |
Time limit exceeded |
| 12 |
Halted |
0 ms |
0 KB |
- |
